Features: *Combined CO and smoke detector *Adopt high accurate electrochemical sensor and infrared ph···
Specification:
Power supply: AC110V or 220V ; DC9V battery back up
Battery 9V battery 6LR61*1 (Not included)
Standby current: ≤30mA AC220V ; ≤10uA DC9V
Working current: ≤30mA AC220V; ≤12mA DC9V
Low Voltage Working Time 7-15 days
Alarm sound level: 85dB/1m
Working temperature: -10℃~50℃
Working humidity: ≤95%RH
Features: Low battery warning, Self test and mute function